143173666242 has 24 divisors (see below), whose sum is σ = 326536432560. Its totient is φ = 45212736600.

The previous prime is 143173666123. The next prime is 143173666249. The reversal of 143173666242 is 242666371341.

It is a super-2 number, since 2×143173666242² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (143173666249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209317884 + ... + 209318567.

It is an arithmetic number, because the mean of its divisors is an integer number (13605684690).

Almost surely, 2^143173666242 is an apocalyptic number.

143173666242 is an abundant number, since it is smaller than the sum of its proper divisors (183362766318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143173666242 is a wasteful number, since it uses less digits than its factorization.

143173666242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418636478 (or 418636475 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The spelling of 143173666242 in words is "one hundred forty-three billion, one hundred seventy-three million, six hundred sixty-six thousand, two hundred forty-two".